Download Biology - Silva Health Magnet High School

OVERVIEW: The class will take notes on Chapter 4-2 What shapes an Ecosystem? which continues a discussion on energy
flow in food chains and applies this knowledge to analyzation and interpretation of food webs. The concept of food webs and
the many roles organisms play as consumers, producers, and decomposers will be discussed. Students will also be introduced
to the concept of symbiosis. This portion of the lesson focuses on symbiosis and ecological relationships. Students will
investigate the many ways that species that live in close proximity to each other might interact in an ecosystem, whether via
competition or predation or through an ongoing symbiotic relationship such as mutualism, commensalism, or parasitism.
LEARNING OBJECTIVES:
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Describe the patterns of energy and matter flow between organisms in an ecosystem.
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Classify various organisms into the appropriate trophic levels and lifestyle associations.
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Define and describe the possible ecological relationships between species that coexist in an ecosystem
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Classify specific interspecies relationships as mutualistic, commensalistic, or parasitic
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Understand that ecological relationships evolved over time and are integral to maintaining the balance and stability
of ecosystems
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Name factors that can throw ecosystems out of balance
CLOSING TASK: Students will participate in an activity, which requires groups to create a food web to learn how food webs
operate. The students will also be required to search for new information and must also define and describe the ecological
relationships between different species in an ecosystem. Students will also discuss the effects of disruptions in an ecosystem.
Students will also participate in card game which matches organisms together based on a symbiotic relationship. Once
matched, the students must read and analyze information to distinguish whether the organisms share a mutualistic,
commensalistic, or parasitic relationship. Fod Web Activty taken from:
http://www.sciencegeek.net/Biology/biopdfs/FoodWebActivity.pdf. Good Buddies Activity taken From:
http://sciencespot.net/Media/GoodBuddies.pdf
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Mr. Martinez • Biology • Silva Health Magnet • 2013-14 • www.meestermartinez.com • Ecology
LESSON PLAN TIMELINE
Foldable
5 min
Class will prepare foldable for notes
Notes
25 min
Ecological Pyramid; information recall
Food Web; Drawing conclusions
Symbiosis; includes 2 min video
Activities
Food Web - the class will gather into groups of 3-4 to create a food web on the lab table using organism icons and chalk.
Symbiosis Card Game – the class will play a symbiosis matching card game.
Discussion
Class will discuss Ecology, Food Webs, and Symbiosis
I will discuss expectations for homework, which are to complete Ecological Succession notes and watch video on Ecological Succession
5 min
5 min
15 min
45 min
15 min
30 min
10 min
8 min
2 min
85 min
The class will sue any class time remaining class time will work on their ecological succession notes.
STANDARDS AND ALLIGNMENT
Readiness Standards
11) Science concepts. The student knows that biological systems work
to achieve and maintain balance. The student is expected to:
(D) describe how events and processes that occur during ecological
succession can change populations and species diversity.
12) Science concepts. The student knows that interdependence and
interactions occur within an environmental system. The student is
expected to:
(A) interpret relationships, including predation, parasitism, commensalism,
mutualism, and competition among organisms;
(C) analyze the flow of matter and energy through trophic levels using
various models, including food chains, food webs, and ecological pyramids;
(F) describe how environmental change can impact ecosystem stability.
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Supporting Standards
11) Science concepts. The student knows that biological systems
work to achieve and maintain balance. The student is expected
to:
(B) investigate and analyze how organisms, populations, and
communities respond to external factors;
(C) summarize the role of microorganisms in both maintaining and
disrupting the health of both organisms and ecosystems.
12) Science concepts. The student knows that interdependence
and interactions occur within an environmental system. The
student is expected to:
(B) compare variations and adaptations of organisms in different
ecosystems;
(D) recognize that long-term survival of species is dependent on
changing resource bases that are limited;
Mr. Martinez • Biology • Silva Health Magnet • 2013-14 • www.meestermartinez.com • Ecology
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Symbiosis/Simbiosis
Parasitism/Parasitismo
Predation/Depredación
Commensalism/Comensalismo
Mutualism/Mutualismo
Competition/Competencia
Guiding Questions (For Teachers)
1. Explain how energy flows through
an ecosystem including: trophic
levels in food chains, food webs
and food pyramids.
2. Name and describe the
interactions that affect
communities in ecosystems.
3. How can microorganisms both
maintain and disrupt the health of
both organisms and ecosystems?
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Academic Language
Autotroph/Autótrofo
Producer/Productor
Heterotroph/Heterótrofo
Consumer/Consumidor
Decomposer/Descomponedor
Carnivore/Carnivoro
Omnivore/Omnivoro
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Biotic/Biótico
Abiotic/Abiótico
Food web/Comida
Web
Food
pyramid/Pirámide
de los Alimentos
Trophic level/Nivel
Trófico
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Stability/Estabilidad
Ecosystem/Ecosistema
Species/Especies
Succession/Sucesión
Resources/Recursos
Food chain/Cadena
Alimentaria
Enduring Understandings
1. Trophic levels are the different steps in a food chain, food web, or food pyramid. The sun is the main
source of energy in most food chains or food webs. There are some organisms that produce
molecules from inorganic compounds. Producers make their own food. Consumers ingest
substances for energy.
2. Competition: two species attempt to use the same resource at the same time, predation: one
organism hunts and feeds on another, mutualism: symbiotic relationship where both organisms
benefit from the relationship, commensalism: symbiotic relationship where one organism benefits
and the other does not benefit nor is it harmed and parasitism: symbiotic relationship where one
organism benefits and the other is harmed
3. All of the organisms in a typical ecosystem are interdependent, helping to maintain the ecosystem and
sustaining each other. Microorganisms, such as bacteria, can decompose the remains of dead
organisms unlike other members of an ecosystem. They can have both mutualistic and parasitic
relationships with organisms in other trophic levels, consequently affecting the entire food chain/web.
Mr. Martinez • Biology • Silva Health Magnet • 2013-14 • www.meestermartinez.com • Ecology